Auxiliary Power Units (APU) Market Analysis and Regional Outlook 2019 : Elbit System, Jenoptik, RTL, Dewey Electronics Corporation
An auxiliary power unit (APU) is a device on a vehicle that provides energy for functions other than propulsion. They are commonly found on large aircraft and naval ships as well as some large land vehicles. Aircraft APUs generally produce 115 V alternating current (AC) at 400 Hz (rather than 50/60 Hz in mains supply), to run the electrical systems of the aircraft; others can produce 28 V direct current (DC).
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